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#1
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Cat. questions
I had a 3 inch cat back exhaust and a camaro style muffler put on my car about 4 months ago and im looking to upgrade the exhaust a little further. I know that svx's have 3 catalytic convertors but i dont know whhich ones have sensors in them. Basically i would like to take out any cat that i can and add more 3 or 3.5 inch pipe for performance and sound. Any suggestions?
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#2
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Re: Cat. questions
Why such big piping? You will reduce the backpressure on your exhaust too much. That will decrease performance. 2.5" piping should be more than ample. And as far as I know, the only sensors in our exhaust are in the pre-cats (o2 sensors).
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Cam '92 Ls-L Dark Teal 11:1 CR ECUTUNE pistons ECUTUNE .256 duration intake/exhaust cams ECUTUNE STAGE 2AV1 ECU Z32 MAF/SR20DET injectors Balanced & Blueprinted |
#3
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Re: Cat. questions
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That said, I removed all 3 of mine many years ago and then later ended up adding back in a high flow 2 into 1 cat because I had lost too much low end torque. Top end was great, but driveability around town had suffered too much. If you do go catless, you might still want to have some kind of expansion near where the main 2 into 1 cat converter is.
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Matt Locker Link 2015 BRZ Limited 6MT 92 Ebony LS-L ECUtune Stage2av1, Z32 MAF, 370cc injectors, TomsSVX intake, BontragerWorks 22mm RSB #003, HID Hi and Lo beams, OT endlink and bushing mods, PWR Aluminum radiator, Harvey's QC shift kit, 2.5" flowmaster 80 exhaust, 17" Michelin Pilot Sport A/S, Poly sway bar bushings, Slotted Bradi rotors, AFBeefcake powdercoated calipers, 97 grill, and a huge set of air horns. 300,000 miles and counting 92 Ebony LS-L. ecutune stage1v4, motorsport 1pc pulley. Garage Queen - sold to Dad in upstate NY 155,000 miles 19 Subaru Ascent Premium - -Hers !. 89 DL 4x4 little red wagon - a.k.a. The immortal suby. 275k R.I.P. |
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